I have been photography mostly in Auto. E-30 is my third Olympus (E500 and E510 were the others) and this year have been working on using the P,A,S & M Controls. I'm still having a difficult time when photographing a group shoots (getting everyone in focus) , indoors and outdoors. I have other problems (noise in my photo) but I'll ask that question later

Can someone give me some guidance or maybe a Aperture starting point that I can work with. The Lens that I have are, 11-22, 12-60, 70-300, 50, 50-200. The 12-60 and the 70-300 I got when I got my E-30 and the others I've had when I got my E-510.
Thank you for your time and I look forward your help
DonnaB, MA